Valve for internal-combustion engines



Amay 20 1924. y1,494,821?,

A. J. WINESBURG VALVE FOR 'INTERNAL COMBUSTION ENGINES Filed Feb. 1, 1922 3 sheets-sheet 2 May 20 1924. 1,494,828

. y n A. J. WlNESBURG` VALVE FR INTERNAL CQMBUSTION ENGINES Filed Feb. 1, w22 y 3 sheets-sheet :'r

Patented May 20, 19241e UNITED STATES ALFRED JORDAN WINESIBURG, OF PIQUA, OHIO.

VALVE FOR INTERNAL-COMBUSTION ENGINES.

' Application led February 1, 1922. Serial No. 533,311.

To all whom z't may concer/n.'

Be it known that I, ALFRED JORDAN WINES- BURG, a citizen of the United States, residing in the city of Piqua, in the county of Miami and State of Ohio, have invented certain new and useful Improvements in Valves for Internal-Combustion Engines, of which the following is a specification.

The principal object of my invention is to provide for internal combustion engines, a valve comprising two parts that are pulled in opposite directions by suitable mechanism to el'ect a double opening in the same length of time that it would require a single piece valve to move half the distance.

My invention contemplates the provision of a two-part sleeve valve which,`when acting as an inlet valve, will afford a double opening for the entering gases to increase the power of the engine; and when acting as an exhaust valve, it will give a double opening for the release of the exhaust gases. thereby enabling them to leave the cylinder more quickly.

Other important and incidental objects will be brought out in the Jollowingspecication, and particularly set forth in the subjoined claims.

In the accompanying drawings,'Figure 1 is a longitudinal end 'section taken through the cylinder block and part of the crank case of an internal combustion engine, showing my improvedvalve and the operating mechanism therefor. Figure 2 is a side-elevational view, partly in section, of the same. Figure 3 is an edge view of the valve operating-yoke Figure 4 is aside view of said yo e. Figure 5 is a side view of the upperroller and cushioning-spring carrying slide. Figure 6 is a cross sectional view taken through one ofthe rollers and the' bearing therefor in the valve-operating yoke. Figure 7 is a cross sectional view taken through the retaining cam. And Figure 8 is a cross sectional view taken through the lifting cam. Throughout the specilication and drawings, corresponding parts. 1

In a detailed descriptionl of the embodiment of my invention shown in the accompanying drawings, the numeral 1 designates a cylinder block containing a cylinder 2 in which a'piston 3 is movable. A connecting rod 4 is' connected between tlie piston and a crank shaft 5. QSee Figure 1.)l

similar reference characters denote The numeral 6 designates a removable cylinder head whichgpreferably comprises a casting inthe depressed central portion of which there is a spark plug 7. Formed in the cylinder head 6, one on each side of a waterjacketed partition 8, are two parallel valve- Longitudinally receiving bores 9 and 10. movable in the bore 9. is a cylindrical sleevevalve part 11 having an outwardly tapering head. A similar sleeve-valve part 12 is longitudinally movable in the bore 10 of said cylinder head.- (See Figures 1 and 2.)

j Directly below each one of the bores 9 and 10, and registering with them, there are provided in the cylinder blockvv l two parallel bores which receive sleeve-valve parts 13 and 14 which, together with the sleeve-valve parts 11 and 12 respectively, make up the two-part sleeve-valves now to 'be described.

Projecting through. acentral hole in each of the sleeve-valve parts 11 and 1,3, is a valve push-rod l5. A similar-valve push-rod 16 projects through 'a central hole in each of.

the sleeve-valve parts 12 and 14. Each one of the push-rods '15 and 16-terminatesat its outer end in a reduced portion 17 that projects through an exteriorly threaded sleeve 18 that is screwed intothe interiorly threaded outer half of its respective sleeve-valve. The top end of the reduced portion 17 of each push rod is threaded to receive a lock nut 19 immediately above a hexagonal end 2O of said sleeve. By turning said sleeve by means of its hexagonal end 20, the outer valve part may be moved to a desired position on the push rod, and held in such position by a lock nut 21 screwed on the top portion of the sleeve. (See Figure l.)

Should it be desired to remove the valve part entirely from its respective push-rod, for the'purpose of cleaningout carbon, said valve part may be liftedoff the push-rod by removing the lock nut 19.

It is thus possible to adjustably secure' the sleeve-valve parts 11 andv 12 on their respective push-rods 15 and 16 by the sleeve means just described, kand to remove those valve parts entirely Jfrom those rods by taking 0E theflock nuts 19. v v.

Referring to vFigures .1 and'2, the following means are provided for effecting a separation of the sleeve-valve parts 12 and 14, to admit between them to a passage21 that leads tothe cylinder 2, a-charge of gas that is substantially double' the amount that nos j would be admitted in the same length of time by. a single-lift valve of the same'diameter and operating at the same rate of speed.

The numeral 22 designates a bracket which is secured by bolts 23, 23 or other Asuitable means to the main casting 1. (See Figure 1.) Secured to the bracket 22 is a guide block 24 that contains a cylindrical bushing 25 through which the upper end 26 of a yoke 27 has a longitudinal movement. This yoke 27 has a lower end 28 which is movable through a bushing 29 in a guide block 30 bolted or otherwise suitably secured to the cylinder block 1. (See Figures 1, 3 and 4.)

Referring to Figures 3 and 4, the yoke 27 preferably comprises a casting that is reinforced at its centralv portion by an integral web 31. Projecting vfrom the rear lower portion of the yoke 27 is a lug 32 which has a boss portion 33 through a hole in which the lower end of the push-rod 16 extends, said lower end being reduced in cross section and exteriorly threaded to receive ltwo retaining nuts 34 by means of which the push-rod is firmly secured tothe yoke. (See Figures 1 and 4.) The web portion of the yoke 27 straddles the cam shaft 35 to which there is secured a lifting cam 36 and a retaining cam 37. As

shown in Figure 8 the lifting cam is of disc shape with a projecting nose or lobe having straight sides and a slightly curved end. The retaining cam 37 has a periphery that is three quarters circular, wit-h the remainder of its periphery slightly curved. (See Figure 7.)

The yoke casting 27, which is hollow, has a recess 38 in its lower end 28 in which is mounted a short shaft 39 whose ends project through, and are tightly secured within, holes 40 in the yoke, one of said holes being shown in Figure 4. Keyed on the shaft 39 is a bearing 41 for a roller 42 which projects into an extension 43 of the recess 38. (See Figures 1, 3and 4.)

Longitudinally movable in the hollow end 26 of the yoke 27 is a cylindrical slide 44 which has an enlarged recess 45 in its lower end to receive a. short shaft 46 similar to the shaft 39. The latter is firmly secured to the walls of said slide 44, and has keyed thereon `a bearing 47 for a roller 48 which projects into an extension 48a of the recess 45 of the slide. (See Figures 1, 5 and 6.)

Provided in the upper end of the slide 44' 1s a deep recess 50 that receives the lower end of a coil spring 51 whose upper end engages a spring-compression cup 52. The latter 1s eXteriorly threaded so that by means of a nut-shaped head 53, it may be screwed down by a wrench into the upper interiorly threaded end of the yoke 27 a sufficient distance to give the spring 51 a desired amount of compression. Surrounding the upper end of thecup 52, which is reduced in cross section, 1s an eXteriorly threaded sleeve 54 whlch 1s screwed into the upper end 26 of the yoke to firmly lock the said cup in an adjusted position. (See Figure 1.)

As the cam shaft 35 revolves, the nose portion of the lifting cam 36 will be ro tated to raise the roller 48 to elevate the upper sleeve-valve part 12 through the pushrod 16 and yoke 27. When the sleeve-Valve part 12 is in its uppermost position, the rlower roller 42 will be in engagement with the slightly curved part of the periphery of the retaining cam 37. Then, as the cam shaft 35 continues to rotate, the slightly curved part of the periphery of the retaining cam 37 will press the lower roller 42 downwardly, to cause the yoke 27 to draw the upper sleeve-valve part 12 back to its closing position and to retain it there until the circular portion of the retaining cam has passed completely over the lower roller. During the reciprocatory movement of the yoke 27, the coil spring 51 will have a tendency to maintain the roller in firm engagement with the periphery of the lifting cani 16 to prevent play and noise.

When the upper sleeve-valve part 12 is moved upwardly by the yoke 27, the lower sleevevalve part 14 is drawn downwardly by the following means. Secured to the lower'end of the sleeve-valve part 14 is a push rod 55 whose lower end is attached to a lug 56 on a yoke 57 similar to the yoke 27. Carried by the upper end of the yoke 57, in the same manner that the roller 48 is carried by the yoke 27, is a roller 58 that is adapted to be engaged by a retaining cam 59, similar to the cam 37, and like it secured on the cam shaft 35.' Also secured on said cam shaft 35 is an operating cam 60, similar to the lifting cam 36, for engagement with a lower roller 61 that is mounted in the lower end of the yoke 57 in the same manner that the roller 42 is secured in the lower end of the yoke 27. (See Figures 1 and 2.)

The cams 36 and 60 are so disposed on the cam shaft 35 that when the yoke 27 is raised by the former, the yoke 57 will be pulled downwardly by the latter, to draw the sleeve-valve parts 12 and 14 away 4from each other to admit between them to the passage 21, a charge of gas that is substantially double the amount that would be admitted in the same length of time byV a single-lift valve of the same diameter and operating at the same rate of speed. This incoming charge of gas is thus permitted to be drawn into the passage 21 from a passage 62 and a hole 63 in the lower valve part 14, and a port 64 in the cylinder block 1 with which said hole 63 communicates. (See Figures 1 and 2.)

After the valve parts 12 and 14 have been separated their maximum distance, they are drawn together again to cut off the incoming charge of gas, by the retaining cams 37k and 59. .In other words, the retaining cams I 37 and 59 are so disposed on the cam shaft 35 that the slightly curved surface of the former will engage the roller 42 to pull the yoke 27 downwardly, and the slightly curved surface of the cam 59 will engage the roller 58 to move the yoke 57 upwardly to effect this closing of the valve.

When the sleeve-valve parts 12 and 14 are brought together by the cams 37 and 59, the shock is absorbed by the cushioning springs 51, of which one is shown in Figure 1. These springs also serve to take up anywear that may take place in the cams and rollers.

The sleeve-valve parts 11 and 13 comprising the outlet valve are operated in the same manner as the sleeve-valve parts 12 and 14 making up the inlet valve. The upper outlet valve part 11 is secured to the push rod 15, while the lower outlet valve part 13 is connected to a push rod 65. The push rod 15 is connected to a yoke 66 in which rollers 67 and 68 are mounted for engagement by a lifting cam 69 and a retaining cam 70 respectively, to operate the upper valve part 11 in the same manner that the upper valve part 12 is actuated. The push rod 65 is connected to a yoke 71 in which rollers 72 and 73 are mounted for engagement by a retaining cam 74 and an operating cam 75 respectively, to operate the lower valve part 13 in the same manner that the lower valve part 14 is actuated. (See Figure 2.)

It is thus seen that I have provided a sleeve valve construction which is not telescopic in its operation, but which comprises two parts or sections which are moved away from each other to open the valve, and which are drawn into engagement with each other to close it, for the purpose of accomplishing the results hereinbefore brought out.

I do not wish to be limited to the details of construction and arrangement herein shown and described, and any changes or modifications may be made therein within the scope of the subjoined claims.

Having described my invention, I claim:

l. In a device of the type described.,l the combination with a cylinder having a communicating passage, of two valvesections adapted to be moved away from, and into engagement with, each other to open and close said passage.

2. In a device of the type described, the y combination with a cylinder having a communicating passage, of two valve sections normally in' engagement to close said passage, and means for moving said valve sections away rom each other to open said passage.

In testimony whereofvI have hereunto set myhand this 31st day of January, 1922.

ALFRED JORDAN WINESBURG.

Witness HOWARD S. SMITH. 

